23 lines
896 B
C
23 lines
896 B
C
#include "equal.h"
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int canFixArray(double * numbers) {
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unsigned short indexNonEqualNumber = 0, indexSecondNonEqualNumber = 0, numberDiffernce = 0, length = (int)numbers[0];
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for (int i = 2; i < length; ++i) {
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if (!isEqual(numbers[i - 1], numbers[i])) {
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numberDiffernce++;
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if (!indexNonEqualNumber) indexNonEqualNumber = i;
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else if (!indexSecondNonEqualNumber) indexSecondNonEqualNumber = i - 1;
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}
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}
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if (numberDiffernce > 2) return -1;
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else if (numberDiffernce == 2 && (!isEqual(numbers[indexNonEqualNumber - 1], numbers[length - 1]) || indexNonEqualNumber != indexSecondNonEqualNumber)) return -2;
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else if (numberDiffernce == 1 && ((indexNonEqualNumber != 2) && (indexNonEqualNumber != (length - 1)))) return -3;
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return 0;
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}
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bool isEqual(double first, double second) {
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return (fabs(first - second) < eps);
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}
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